Mixing faucet for dispensing beverages



May 20, 1947. R. YUZA 2,420,850

.7 MIXING FAUCET FOR DISPENSING BEVERAGES Filed Sept. 21, 1945 4Sheets-Sheet l 4Z INVENTOR.

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MIXING FAUCET FOR DISPENSING BEVERAGES Filed Sept. 21, 1945 u l 33 Th1"7 ,1 1

m an mm May 20, 1947. R. YUZA 2,420,850

MIXING FAUCET FOR DISPENS ING BEVERAGES Filed Sept. 21, 1945 4Sheets-Sheet 4 '67 INVENTOR.

Tad 440i yuzd Patented May 20, 1947 r 2,420,850 mxmc moon-r roaDISPENSING BEVERAGES Rudolph Chicago, 111., assignor to A. DalkinCompany, Chicago, 111., a corporation of Illinois Application September21, 1945, Serial No. 61l,'l09

GCIaims. 1

This invention relates to a dispensing apparatus particularly though notnecessarily designed for use in connection with soda fountains fromwhich a beverage from a mixture of liquids is principal object is toprovide an apparatus of the character described hereinafter which willbe highly efllcient in use and economical in manufacture and of asimplified and improved construction.

A stillfurther and equally important object of the invention is theprovision for moving the syrup ejecting piston by resilient pressure,resulting from and by reason of a spring connection between the drivingpiston and the driven piston, with the resulting structure affording apredetermined movement of the driving piston prior to the movement ofthe driven piston, against a body of syrup previously drawn into ameasuring chamber.

Yet another and equally important object of the invention is theprovision of a dispensing apparatus of the character hereinafterdescribed, wherein there is obtained a high volume of gas in thecarbonated water at the dispensing area, resulting in the dispensing ofa highly carbonated drink, with the minimum amount of foam.

Still a further object of the invention is the provision of an apparatusof the character hereinafter described which, by its employment, assuresa rapid dispensing of a mixed drink, usually consisting of a syrup andcarbonated water. It is common knowledge that delay is encountered inpreparing and serving a mixed drink'by reason of the fact that in thedispensing ofa drink consisting of a syrup and carbonated water, a largeor deep foam head results, with the consequence that the operator mustwait until the foam is substantially dissipated before adding to thedrink additional carbonated water and syrup to provide a mixed drink ofproper volume. With this in mind, it. is an object of the invention todispense the syrup and carbonated water in the drinking glass in amanner such that a relatively small foam head is formed, during themixing operation, thereby facilitating rapid succession in thedispensing of the mixed drink.

Other objects will appear hereinafter.

The invention consists in the novel combination and arrangement of partsto be hereinafter described and claimed.

The invention will be best understood by reference to the accompanyingdrawings showing the preferred form of construction, and in which:

- dispensed. In this aspect of the invention, a g

Fig. 1 is an elevational view of the dispensing apparatus embodying myinvention;

Fig. 2 is a sectional detail view taken substantially on line 2-2 ofFig. 1;

Fig. 3 is a rear view of the same;

Fig. 4 is a sectional detail view taken substantially on line 4-4 ofFig. 1;

Fig. 5 is a sectional detail view taken substantially on line 5-5 ofFig. 1

Fig. 6 is a fragmentary elevational view illustrating the piston withinits cylinder as embodied in the invention;

Fig. 7 is a front elevational view of the piston embodied in theinvention;

1| Fig. 8 is a rear elevational view of the piston embodied in theinvention; and

Fig. 9 is a sectional detail view taken substantially on line 9-9 ofFig. 2.

Referring to the drawings illustrating the preferrecl form ofconstruction by means of which the several objects of the invention areaccomplished, a refrigerator is indicated at l0, and it is within thisrefrigerator that a container containing the syrup and a containercontaining the carbonated water are arranged, said containers not beingshown in the drawings as they may be of any conventional type ofconstruction and do not constitute any part of this present invention.

This refrigerator ill may be of any approved construction havinginsulated walls Ii for obvious purposes. In the front wall of therefrigerator is arranged a mounting block l2 having a central openingI3. Through this opening I 3 is arranged the cylinder body H of myimproved dispensing apparatus. This cylinder body ii at its forward endportion is provided with a collar l6. Between the cylinder body I 4 andthe block I2 is an insulating sleeve l8 formed preferably of rubber orthe like and having a flange l9 disposed between the collar l6 and theoutside wall plate 25 of the cylinder body It are threaded a pair ofbolts 21 which draw the cylinder body It in a direction to compress thecollar l8 against the flange I8 and the annular seat 24 against thesealing ring 25, thus effecting a complete seal between the cylinderbody I 4 and the wall H.

The collar l6 has an internal recess 28 into which seats the innerportion 29 of a head plate 33 formed as an integral part of a nozzlehead 3|. This plate 33 provides an annular peripheral flange .32, which,when the plate is connected to the cylinder body H by means of screws33, is tightly drawn up against the edge of the collar l6, as shown inFigs. 1 and 4.

The cylinder body |4 provides a substantially thick rear wall 34 havingformed therein, as shown in Fig. 5, a bore 35, the inner end portion ofwhich is reduced to provide an orifice 33 communicating with a measuringchamber 31, hereinafter more fully described.

In this bore 35 is threaded a nipple 33. Carried by the inner end ofthis nipple 33, as at 39, is a check valve 43 of a well-known andapproved construction. To this nippleds adapted to be connected a supplyconduit (not shown) leading from a syrup container (not shown) for theadmission of syrup through the nipple and orifice into the measuringchamber 31. The arrangement is such that the syrup is permitted by thecheck valve to be drawn into the measuring chamber 31, but when thesyrup is ejected from the measuring chamber through an outlet bore, thecheck valve will automatically close because of its resilient structure,and prevent flow of the syrup from the measuring chamber 31 back intothe container.

In this end wall 34, there is formed a bore 4|, and mounted in this bore4| is a nipple 42 carrying, as in the case of the nipple 38, a checkvalve 43. This nipple 42 communicates with a vertical bore 44 formedpreferablythough not necessarily by a drilling into the wall 34, with aplug 45 closing the bore 44 at its upper end portion. This bore 44communicates with a horizontal delivery passage 46 formed in the-sidewall of the cylinder body i4, also preferably though not necessarily bya suitable drilling operation.

The arrangement is such that the measured syrup may be forced into thebore 44 through check valve 43, but cannot be drawn back into themeasuring chamber by reason of the closing of check valve 43 in a mannerwell-known in the art.

The means for drawing the syrup into the measuring chamber 31 and forejecting the measured syrup therefrom, will now be explained.

In the cylinder body I4 is arranged a piston assembly P consisting ofouter piston 41. This piston 41 at its rear end portion and immediatelyadjacent its forward end portion, is provided with l4 and are providedwith a. number of openings 49 to permit the escape of air so as to allowfreedom of movement of the piston assembly in the cylinder body l4.Embracing the outer piston 41 and having rolling engagement with theinner walls of the cylinder body I4, is a resilient piston ring 5| ofa'construction and form similar to that shown in United States LettersPatent No. 2,317,034, dated April 20, 1943, for providing an eflectiveseal between the outer piston 41 and the cylinder body 4..

In the lower end portion of the collar I6 is provided an opening 52which communicates with the interior of the head M and with the space 53between the cylinder body l4 and outer piston 41 for the dual purpose ofpermitting the exit of air from within the head 3| and the space 53 topermit the freedom of movement of, the

piston 41 by means hereinafter described and for the additional purposeof allowing exit through the weep hole 52 of any condensation whichmight form in the head 3| or in the space 53.

The outer piston 41 has a cap 53' threaded thereon constituting thefront wall of the piston 41, and this front wall is provided with anopening 53. Arranged within the outer piston 41 is an inner piston 54having its side walls partially relieved as at 55 from.the inner wallsof the piston 41 to facilitate by reduction of friction the movement ofthe inner piston by means hereinafter set forth. This inner piston 54provides a mounting stud 53 in line with a mounting stud 51 formed onthe rear wall '53 of the piston 41. In the stud '53 is an escape opening53' which allows for the escape of air from within the piston assemblywhen the inner piston is moved relatively to the outer piston.

Embracing the outer end portions of these mounting studs 53 and '51, isan expansion spring 59 arranged within an expansion spring 33 having itsend portions mounted upon the base portion of the mounting studs 53 and51. The arrangement is such that the inner piston 54 will be free tomove a predetermined distance to compress the springs 59 and 63 to acondition whereby the springs, upon further movement of the piston 54,will impart movement to the piston 41 against a body of syrup previouslydrawn into the measuring chamber 31. The piston assembly P together vith the walls of the cylinder body |4, provide the measuring chamber 31.Rearward movement of this piston assembly is limited by a pilot stud 6|,the length of which may be varied according to the distance of movementof the piston assembly in the cylinder body H in a direction toward therear wall 34.

Provided by the piston 54 and projecting through the opening 53, is abifurcated lug 32 carrying a pintle 63 projecting through an elongatedslot 34 of a connecting link 35.

This connecting link 35 has its end portion 36 pivotally connected bymeans of a pintle 61 to a bifurcated lug 63 formed as an integral partof a ball-shaped element (i9 arranged for rotation in the slotted endportion 13 of the head 3| the head 3|.

'upon a pivot pin 12 carried by the head 3| as shown in Figs. 2 and 4.To this pivot pin 12 is also connected the end portion 13 of anoperating handle 14. The ball-shaped element 69 has a cam face 15adapted to engage the top edge 13 of a pair of spaced projections 11formed as an integral part of a, valve operating disc 13. In this head3| there is provided a distributing chamber 13 in which is seated aresilient ring 83 preferably formed of compressible material such asrubber or the like, and this valve operating disc 13 rests upon thisring 33 as shown in Fig. 4. The distributing chamber 19 has a connectingorifice 3| into-which the stem 32 of the disc 13 projects. This orifice8| communicates with a valve chamber 33 provided at the base of an ex-'terior bore 34 formed in the neck portion 35 of Threaded into the lowerend portion of this exterior bore 34 is a sleeve 36 formed as anintegral part of a nozzle tip 31. This nozzle tip 31 is provided with abore 33 into .which there is slidably mounted the stud shaft 39 formedas an integral part of 'a valve cup supporting a valve disc 9|, which,when in the position shown in Fig. 4, closes communication between theorifice 3| and the valve chamber 33. This valve disc 9| is normally heldin valve-closing position through the medium of an expansion spring 92mounted in the nozzle tip as shown in Fig. 4. The nozzle tip 31 providesan enlarged portion 93 having slidably arranged thereon a valve 5 sleeve61' having a valve head 94 controlling outlet of. syrup from a syrupwell 93 formed in the valve sleeve 91. Communicating with this well 93is an outlet 91 having communication through a combined sealing ring andrestricting duct, with the delivery passage 46. This combined sealingring and restricting duct includes a rubber sleeve 99 embracing a shortmetal duct 99' and compressed against an adjacent wall of the body I4 toprevent leakage of the syrup from the passage 46.

Threaded upon the reduced end portion of the valve head is a nozzle cap96 providing together with the valve sleeve 91' an outlet orifice 95 forthe mixed drink into the drinking glass (not shown).

At predetermined points radially with respect to each other, there areformed in the neck 85 vertical openings I00. Positioned in theseopenings I are control pins IN the upper ends of which, as shown in Fig.4 are disposed below and in slightly spaced relation with respect to thevalve disc 18 and are adapted to be engaged by this disc 18 to bear thetapered end portions I02 against the valve sleeve 81' to move the sleeve61' against the action'of the spring I03 whereby to open the syrupoutlet 91. While I have shown three of these control pins IOI, it ismanifest that there may be less or more in number of the same.

, Communicating with the-bore 19 is a passage I04, and this passage inturn through a sealing ring I05, similar to the sealing ring 98, hascommunication with a passage I06 formed in the cylinder body I4 andcommunicating with anipple I01 (Fig. 5) to which is attached the conduitleading from the carbonated water tank.

As shown in Fig. 9, there is formed in the upper periphery of the cap 96one or more openings I09, and communicating with these openings arevertical slots I09 to liberate for reasons hereinbeiore set forth,excess gas in the carbonated water during drawing of the drink and itspassage through the outlet orifice.

To expedite and facilitate locating the valvehead 3| in its properposition with respect to the cylinder body I4 and with the handle 14 andthe nozzle 39 in a substantially vertical plane, I pro vide as shown inFigs. 2, 3 and 4, on the cabinet 23 a locating finger 2I'. This locatingfinger H for the purpose of locating the valve aforesaid, cooperateswitha U-shaped projection 22 carried by the inside wall plate 22 of the wallstructure II.

The flow of the syrup, under ejection from the measuring chamber, isthrough the nipple 42, the check valve 43, the port 44 and into theoutlet passage 46, through the restricted duct 98 into the outlet ports91', from whence it flows from the syrup well 93 with the carbonatedwater over the valve sleeve 61' into the drinking cup or container.

The flow of the carbonated water from a container (not shownT is throughthe nipple I01, the passage I06, the restricted duct I05, passage I04,into the distributing chamber 19 for passage through the outlet 95,through which outlet the syrup and carbonated water will by capillaryaction hug the valve sleeve 81' as the mixture flows into the drinkingglass. 7

The diameter of the"duct"90 in its comparison with the diameter of therestricted duct I05 is such that the flow of syrup will be commensuratewith the flow of the carbonated water to produce a drink of proper anddesirable proportion of the mixture as is conducive to a well mixeddrink.

In the dispensing of a mixed dr1"k, it is desir able to draw into thedrinking glass prior tothe dispensing of the carbonated water and syrupa small amount of carbonated water only. This will prevent the syrupfrom sticking and congealing upon the inside bottom of the drinkingglass.

To accomplish this feature of my invention, the slot and pin connection63 and 64, respectively, between the handle 14 and the piston assembly41, has been provided. The resulting structure, while openingcommunication between the outlet ports I I0 and the distributing chamber19 for the discharge of carbonated water, imparts no pivotal movement tothe piston assembly upon initial pivotal movement of the handle 14 aboutthe pintle 12 toward its forwardmost position.

To condition the apparatus for the drawing of a drink, it is necessaryto draw a portion of the syrup into the measuring chamber 31. This isaccomplished by pivoting the handle 14 about its pintle 12 to itsextreme forward position, in which position of the handle 14 the pistonassembly 41 will be disposed in its'innermolt posi; tion within'thecylinder body I4. The handlefl' is then pivoted about its pintle 12 toits innermost position or to the position shown in Fig. 4, and duringthis pivotal movement of the handle 14, the piston assembly 41 will bemoved to its forwardmost position within the cylinder body mostposition, will open the valve disc 18 to allowthe flow of carbonatedwater through the outlet 95 into the drinking glass so as to screen thein- I side bottom of the drinking glass from the syrup when the syrupand additional carbonated water are dispensed into the glass. Furthermovement of the handle 14 about its pintle 12 in the above stateddirection, will impart movement to the inner piston 54, and thismovement will continue until the springs 59 and 60 are compressed to adegree such as will move the outer piston 58 in a direction against thebody of yrup previously drawn in the measuring chamber 31. This movementof the piston assembly 41 will force the syrup from the measuringchamber 31 through the check valve 43, into the port 44, passage 46, andrestricted passage 99, into the ports 91,- and thence through the outlet95. During this dispensing of the syrup from the measuring chamber 31,the valve disc 18 is retained open, by engagement between the camsurface 15 and the lugs 11, so that carbonated water will flow throughthe diverging outlet passages IIO into the outlet where it willcommingle with the syrup and flow therewith into the drinking glass.

From a reading of the foregoing description,

it will become apparent that in the dispensing of the mixed drink by theuse of an apparatus constructed in accordance with the disclosureherein, there is a flow of carbonated water before, as well as after,the dispensing of the syrup with the water. This feature of theinvention accomplishes the dual function of, first, providing asufficient amount of carbonated water in the drinking glass to screenthe inside bottom thereof from the syrup, reducing to a minimum the for-7 mation of a film of syrup. thereon, and, second, that of washing anyremainingsyrup from the nozzle to avoid the presence of a fllm of syrupthereon which would otherwise attract insects or the like.

As a result of the foregoing construction, a measured mixed drink isdrawn by the use of my improved dispensing apparatus, in which there ispresent high carbonation, with the minimum amount of foam and themaximum volume of water, and that the apparatus thus described reducesto a minimum the time required to draw and serv successive mixed drinks.

From the foregoing description, it is apparent that I have provided anapparatus which is capable of the performance of all of the hereinbeforestated objects and that the same is designed with the viewpoint ofeconomy in manufacture and efllciency in use.

While I have illustrated and described the preferred form ofconstruction for carrying my invention into effect, this is capable ofvariation and modification without departing from the spirit of theinvention. I, therefore, do not wish to be limited to the precisedetails of construction set forth, but desire to avail myself of suchvariations and modifications as come within the scope of the appendedclaims.

Having thus described my invention, what I claim as new and desire toprotect by Letters Patent is:

l. A nozzle for dispensing a plurality of liquids to produce a mixeddrink, comprising a structure having separate liquid passages formedtherein, and a nozzle tip at one end thereof and providing a valvechamber communicating with one of said passages, a valve sleeve slidablymounted on said tip and providing a valve for the other of the passages,a valve member in said valve chamber and normally closing passagetherefrom, a cap mounted on said structure and surrounding said tip andproviding together with said tip a mixing chamber having an outletorifice, said structure having diverging passages formed therein openingcommunication between said valve chamber and said mixing chamber, andmeans for moving said valve member and said valve sleeve from and tovalve closing position with respect to said valve chamber and said otherof the passages, respectively.

2. A nozzle for dispensing a plurality of different liquids to produce amixed drink, comprising a structure having separate liquid passagesformed therein, and a nozzle tip at one end thereof and providing avalve chamber communicating with one of said passages, a valve sleeveslidably mounted on said tip and providing a. valve for the other of thepassages, a valve member in said valve chamber and normally closingpassage therefrom, a cap mounted on said structure and surrounding saidtip and providing together with said tip a mixing chamber having anoutlet orifice, said structure having diverging passages formed thereinopening communication between said valve chamber and said mixingchamber, and means for moving said valve member and said valve sleevefrom and to valve closing position with respect to said valve chamberand said other of the passages respectively, said cap having means forthe liberation of excess gas from liquid entering said mixing chamberfor passage through said outlet orifice.

3. A nozzle for dispensing a plurality of liquids to produce a mixeddrink, comprising a structure having separate liquid passages formedtherein,

and a nozzle tip at one end thereof and providing a valve chambercommunicating with one of said passages, a valve sleeve slidably mountedon said tip and providing a valve for the other of the passages, a valvemember in said valve chamber and normally closing passage therefrom, acap mounted on said structure and surrounding said tip and providingtogether with said tip a mixing chamber having an outlet orifice, saidstructure having diverging passages formed therein opening communicationbetween said valve chamber and said mixing chamber, and means for movingsaid valve member and said valve sleeve from and tovalve closingposition with respect to said valve chamber and said other of thepassages, respectively, said means including a structure common to saidvalve sleeve and said valve member for moving said valve sleeve and saidvalve member simultaneously from said valve closing position.

4. A nozzle for dispensing a plurality of liquids to produce a mixeddrink, comprising a structure having separate liquid passages formedtherein, and a nozzle tip at one end thereof and providing a valvechamber communicating with one of said passages, a valve sleeve slidablymounted on said tip and providing a valve for the other of the passages,a valve member in said valve chamber and normally closing passagetherefrom, a cap mounted on said structure and surrounding said tip andproviding together with said tip a mixing chamber having an outletorifice, said structure having diverging passages formed therein openingcommunication between said valve chamber and said mixing chamber, andmeans for moving said valve member and said valve sleeve from and tovalve closing position with respect to said valve chamber and said otherof the passages, respectively, said means including a structure commonto said valve sleeve and said valve member for moving said valve sleeveand said valve member simultaneously from said valve closing position,said means including a structure common to said valve sleeve and saidvalve member for moving said valve sleeve and said valve membersimultaneously from said valve closing position.

5. A nozzle for dispensing a plurality of different liquids to a pointof merger below the nozzle, comprising a head structure having a nozzletip at one end, a slidable valve sleeve on said tip and providingtogether with said head a valve chamber, a liquid discharge passagecommunicating with said chamber, said head providing a second valvechamber and having a liquid'discharge passage communicating therewith, avalve member in said second chamber and normally closing passagetherefrom, a cap mounted on the lower end of said head and having itslower portion spaced from said valve sleeve, said head having divergingpassages formed therein opening communication between said valvecha'mber formed in the head and the space between the cap and the valvesleeve, means for moving said valve member and said valve sleeve fromand to valve closing position with respect to said head, said meansincludin a handle pivotally carried by the head, a member having cammingengagement with respect to said handle 9 to said valve sleeve to valveclosing position with respect to said head.

6. A nozzle" for dispensing a plurality of different'liquids to a pointof merger below the nozzle, comprising a head structure havinga nozzletip at one end, a slidable valve sleeve on said tip and. providingtogether with saidhead a valve chamber; a liquid discharge passage com:-municating with said chamber, said head providing a second valve chamberand having a liquid discharge passage communicating therewith, a valvemember in said second chamber and having diverging passages formedtherein opengo Number .10 her having camming engagement with respect tosaid handle for moving said valve member from valve closing positionwith respect to the valve chamber in said head, vertically movable pinmembers caj'ried by the head and engaging said valve sleevb and adaptedto be engaged by said-gnember ahd be moved by said member toimpartmovement to said valve sleeve to valve closing positicn withrespect to said head. said cap having means for the liberation of excessgas from liquid entering said mixing chamber for passage through saidoutlet orifice.

RUDOLPH YUZA.

REFERENCES CITED The following references are of record in the file ofthis patent:

UNITED STATES PATENTS Name Date 1,466,760 Scribner et a1. Sept. 4, 19231,525,650

Koenlng Feb. 10, 1925

